Top "Copy-elision" questions

What are copy elision and return value optimization?

What is copy elision? What is (named) return value optimization? What do they imply? In what situations can they occur? …

c++ optimization c++-faq return-value-optimization copy-elision

How can a unique_ptr be returned by value without std::move?

std::unique_ptr<int> ptr() { std::unique_ptr<int> p(new int(3)); return p; // Why doesn't …

c++ c++11 move-semantics copy-elision

How does guaranteed copy elision work?

At the 2016 Oulu ISO C++ Standards meeting, a proposal called Guaranteed copy elision through simplified value categories was voted into …

c++ c++17 copy-elision

What is copy elision and how does it optimize the copy-and-swap idiom?

I was reading Copy and Swap. I tried reading some links on Copy Elision but could not figure out properly …

c++ optimization copy-and-swap copy-elision

C++ return value optimization

This code: #include <vector> std::vector<float> getstdvec() { std::vector<float> v(4); v[0] = 1; v[1] = 2; …

c++ return-value-optimization copy-elision

How to in-place initialize an array?

How can I initialize an array without copy or move-constructing temporary elements? When the element has an explicitly deleted copy …

c++ arrays in-place copy-elision deleted-functions